Very personal opinion, but I find the Genesis 9 surface system horrible
It's not that I don't like to use L.I.E.s from time to time, but it's a pain in the ass when it's everywhere. It's long to load, long to modify, long to find the good layer, almost impossible to fine tune the colorimetry of a detail (Try to slightly darken eye shadows and slightly lighten lipstick now or try to modify the irises... Before, it was easy...), etc.
And I don't know where they doubled the number of vertexes, but it's certainly not in the chest area